Is everyone telling me that they don't have enough confidence in the 440 that it will push that big old truck to a 7.50 in the 1/8 mile. I will admit the best it has run was an 8.53 but that was when it wouldn't shift, up against the rev limiter, with different heads, cam, carburetor, converter, valve body, etc. Only time will tell and I'll let Bryce know which scrap yard. He's closest and will probably be able to get there first.